The Sensex has extended gains and surged to this years high of 15,711. The index is now up 312 points at 15,700.
The Nifty is at 4,660 - 89 points. Earlier, it touched a high of 4,664.
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(Updated at 1016 hrs)
The Sensex today opened with a positive gap of 61 points at 15,449 and surged to a high of 15,686. The index is now near its high at 15,661 - up 273 points.
The Nifty is now at 4,649 - up 78 points. Earlier, the index had opened flat at 4,572 and touched a high of 4,658.
Sterlite has surged 3.5% to Rs 649. Tata Motors and Larsen & Toubro have gained 3% each at Rs 408 and Rs 1,532, respectively.
SBI and DLF have added 2.7% each to Rs 1,770 and Rs 413, respectively. Tata Steel, Mahindra & Mahindra, BHEL, Japrakash Associates have advanced 2% each.
HDFC, ONGC, Reliance Communications, Reliance, HDFC Bank, Sun Pharma, Infosys, ICICI Bank, Reliance Infrastructure, Hindalco and Maruti Suzuki are the other gainers.
Among the Nifty stocks, Idea Cellulars, Cairn India, NAlco, Reliance Capital and HCL Technologies are the major movers.